/*
 * Copyright 2012-2017 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.teiid.spring.autoconfigure;

import javax.transaction.TransactionManager;
import javax.transaction.UserTransaction;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;
import org.springframework.transaction.annotation.TransactionManagementConfigurer;
import org.springframework.transaction.jta.JtaTransactionManager;

@Configuration
@EnableTransactionManagement
public class MultiDataSourceTransactionManagement implements TransactionManagementConfigurer{

    @Autowired(required=false)
    private TransactionManager transactionManager;

    @Autowired(required=false)
    private UserTransaction userTransaction;

    @Bean
    @Primary
    public PlatformTransactionManager platformTransactionManager() {
        if (this.transactionManager != null && !(this.transactionManager instanceof PlatformTransactionManagerAdapter)) {
            return new JtaTransactionManager(this.userTransaction, this.transactionManager);
        }
        return new DelegatingPlatformTransactionManager();
    }

    @Override
    public PlatformTransactionManager annotationDrivenTransactionManager() {
        return platformTransactionManager();
    }
}
